package edu.byui.chat;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.AnnotationConfiguration;

/*

 * This class follows the singleton pattern.

 */

public class HibernateUtilSingleton

{

	private static final SessionFactory sessionFactory;

	static

	{

		try

		{

			AnnotationConfiguration config = new AnnotationConfiguration();

			config.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");

			config.setProperty("hibernate.connection.driver_class", "com.mysql.jdbc.Driver");

			//change the next line of code to match your MySQL url

			config.setProperty("hibernate.connection.url", "jdbc:mysql://localhost/test");

			//change the next two lines of code to match your MySQL user name and password.

			config.setProperty("hibernate.connection.username", "dude");

			config.setProperty("hibernate.connection.password", "hey2dude");

			//change the pool size to reflect how many users you expect your application to have initially

			config.setProperty("hibernate.connection.pool_size", "1");

			config.setProperty("hibernate.connection.autocommit", "true");

			config.setProperty("hibernate.cache.provider_class", "org.hibernate.cache.NoCacheProvider");

			/*

			 * un-comment the next line of code if you want to be able to drop and recreate tables for your data classes listed below.  This is generally a bad idea for security reasons.

			 */

			//config.setProperty("hibernate.hbm2ddl.auto", "create-drop");

			config.setProperty("hibernate.show_sql", "true");

			config.setProperty("hibernate.transaction.factory_class", "org.hibernate.transaction.JDBCTransactionFactory");

			config.setProperty("hibernate.current_session_context_class", "thread");

			/*

			 *  Add your classes here that you want to match your database tables

			 *  The example has a User and a PhoneNumber class.

			 */

			config.addAnnotatedClass(User.class);

			config.addAnnotatedClass(Message.class);

			sessionFactory = config.buildSessionFactory();

		}

		catch (Throwable ex)

		{

			System.err.println("Initial SessionFactory creation failed." + ex);

			throw new ExceptionInInitializerError(ex);

		}

	}

	public static SessionFactory getSessionFactory()

	{

		return sessionFactory;

	}

	//make a private default constructor so that no other HibernateUtil can be created.

	private HibernateUtilSingleton(){

	}

}
